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American Association of State and Highway Transportation Officials, 2022
Publisher: AASHTO
File Format: PDF
$36.00$73.00
Pages:5
File Size:1 file , 270 KB
Note:This product is unavailable in Ukraine, Russia, Belarus
This qualitative test method can be used to identify the presence of polyphosphoric acid (PPA) in asphalt binder or residue. If PPA is present in the binder, a blue color is developed in approximately 5 min. The test method is not quantitative, but it can detect PPA at concentrations as low as 0.1 percent. The test method can only determine the presence of phosphorus. It is not specific for the presence of PPA. A positive test result assumes that the phosphorus is from PPA. Any additive that contains phosphorus will give a false positive for the presence of PPA.
This standard was formerly designated as provisional standard TP 78.
Standard Method of Test for Determining the Influence of Road Surfaces on Traffic Noise Using the Continuous-Flow Traffic Time-Integrated Method (CTIM)
$48.00 $97.00
Standard Practice for Sample Preparation and Polishing of Unbound Aggregates for Dynamic Friction Testing
$44.00 $89.00
Standard Method of Test for Soundness of Aggregate by Use of Sodium Sulfate or Magnesium Sulfate
$43.00 $86.00
Standard Method of Test for Determining the Fracture Energy of Asphalt Mixtures Using the Semicircular Bend Geometry (SCB)
